🛠️Visual Current Signals on Siemens SIPROTEC 4 Relays

Is it possible to convert the measured current into a bar graph on the display of a SIEMENS SIPROTEC 4 relay? Yes, and I achieved this during my time at CEMEX VENEZUELA! I designed a solution that represents current values as stepped blocks directly on the device's interface, using DIGSI 4 logic and CFC programming.

This implementation not only optimized operational ergonomics, but introduced new forms of technical visualization in the field—especially useful for technicians Electricians responsible for constantly monitoring operating conditions, such as in the case of a crude mill. A simple and powerful way to translate data into visual decisions.

Visualización gráfica de la corriente promedio en el display de un relé SIEMENS SIPROTEC 4 modelo 7SJ63

🖥️ Technology used:

• Hardware: Relay 7SJ63

• Software: DIGSI 4.xx

• CFC (Continuous Function Chart)

• Blocks: UPPER_SETPOINT, BOOL_TO_DI

• Output objects: Double Notice (AD)

  
  

🎯 Key design steps:

1. Definition of AD objects in the logical matrix for each stream section.

2. Implementation of stepped blocks in CFC logic.

3. Creating dynamic icons by current threshold.

4. Graphic assignment on the display with bar-type visual logic.

   
   

✅ Practical applications:

• Engine protections

• Transformers

• Industrial feeders

📄 Download the white paper

⚙️ Configuring Current Bar Indicators on Graphical Displays – SIEMENS SIPROTEC 4.pdf

Download PDF • 4.21MB

Author: Richard Mosqueda Ruiz

🧠 Conclusion

This type of visualization transforms the way technicians interpret operating conditions in the field. A simple graphic display can be transformed into a dynamic and predictive tool with applied creativity.

Article published on the PROTELECTSA technical blog — applied solutions for engineers who design with vision.